macroinvertebrates

Macroinvertebrates are small animals without backbones that live in water, such as insects, crustaceans, and worms, visible to the naked eye. They play a vital role in aquatic ecosystems by helping break down organic matter and serve as food for fish and other wildlife. Because different species have specific habitat needs and sensitivities to pollution, they are often used by scientists as natural indicators to assess the health of rivers, lakes, and streams. The diversity and presence of certain macroinvertebrates can reveal the water’s quality and overall ecological condition.